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Cornerstone · Grades 3–5 Keystones #40 9 February 2026 Skills week 7 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 9 February 2026 · mathsvault.uk/keystones

  1. 1. Number Dividing fractions

    Calculate: 13 ÷ 4

    Answer: 112
  2. 2. Algebra Two-step inequalities

    Solve: 4x - 8 > 15

    Answer: x > 5.8
  3. 3. Geometry Area of a right-angled triangle

    Calculate the area of a right triangle with perpendicular sides 9cm and 10cm

    Answer: 45cm²
  4. 4. Ratio Unitary method

    5 kg costs £42.20. What is the cost of 17 kg?

    Answer: £143.48
  5. 5. Statistics Mode

    Find the mode of: 15, 14, 14, 7, 14, 6

    Answer: 14